<template>
  <div>
    <!-- 面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>添加商品</el-breadcrumb-item>
    </el-breadcrumb>
    <!--卡片视图 -->
    <el-card>
      <el-alert title="添加商品信息" type="info" center show-icon :closable="false"></el-alert>
      <!-- 步骤条组件-->
      <el-steps :space="200" :active="+activeIndex" finish-status="success" align-center>
        <el-step title="基本信息"></el-step>
        <el-step title="商品参数"></el-step>
        <el-step title="商品属性"></el-step>
        <el-step title="商品图片"></el-step>
        <el-step title="商品内容"></el-step>
        <el-step title="完成"></el-step>
      </el-steps>
      <!-- left tab栏区域-->
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="100px" label-position="top">
        <el-tabs :tab-position="'left'" v-model="activeIndex" :before-leave="beforeTabLeave" @tab-click="tabClicked">
          <el-tab-pane label="基本信息" name="0">
            <el-form-item label="商品名称" prop="goods_name">
              <el-input v-model="addForm.goods_name"></el-input>
            </el-form-item>
            <el-form-item label="商品价格" prop="goods_price">
              <el-input v-model="addForm.goods_price" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品重量" prop="goods_weight">
              <el-input v-model="addForm.goods_weight" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品数量" prop="goods_number">
              <el-input v-model="addForm.goods_number" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品分类" prop="goods_cat">
              <el-cascader v-model="addForm.goods_cat" :options="catelist" expandTrigger='hover' :props="cateProps"
                @change="handleChange" clearable>
              </el-cascader>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品参数" name="1">
            <!--渲染表单列表的item项 -->
            <el-form-item :label="item.attr_name" v-for="item in manyTableData" :key="item.attr_id">
              <!-- 复选框组-->
              <el-checkbox-group v-model="item.attr_vals">
                <el-checkbox :label="cb" v-for="(cb,i) in item.attr_vals" :key="i" border></el-checkbox>
              </el-checkbox-group>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品属性" name="2">
            <el-form-item :label="item.attr_name" v-for="item in onlyTableData" :key="item.attr_id">
              <el-input v-model="item.attr_vals"></el-input>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品图片" name="3">
            <!-- 注意这里用的不是项目的axios来发送 所以没有携带token -->
            <el-upload :action="uploadURL" :on-preview="handlePreview" :on-remove="handleRemove" list-type="picture"
              :headers="headerObj" :on-success="handleSuccess">
              <el-button size="small" type="primary">点击上传</el-button>
            </el-upload>
          </el-tab-pane>
          <el-tab-pane label="商品内容" name="4">
            <quill-editor ref="myQuillEditor" v-model="addForm.goods_introduce">
            </quill-editor>
            <el-button type="primary" class="btnAdd" @click="add">{{editId?"修改商品":"添加商品"}}</el-button>
          </el-tab-pane>
        </el-tabs>
      </el-form>
    </el-card>
    <!-- 图片预览对话框-->
    <el-dialog title="图片预览" :visible.sync="previewVisible" width="50%">
      <img :src="previewPath" alt="图片预览" class="previewImg">

    </el-dialog>
    <!--<div>{{editId}}</div> -->
    <div :editId="edit_id"></div>
  </div>
</template>
<script>
  import _ from 'lodash'
  export default {
    props: ['editId'],
    data() {
      return {
        activeIndex: '0',
        // 添加商品的表单数据
        addForm: {
          goods_name: '',
          goods_price: 0,
          goods_weight: 0,
          goods_number: 0,
          // 商品所属的分类数组
          goods_cat: [],
          pics: [],
          goods_introduce: '',
          attrs: []
        },
        addFormRules: {
          goods_name: [{
            required: true,
            message: '请输入商品名称',
            trigger: 'blur'
          }],
          goods_price: [{
            required: true,
            message: '请输入商品价格',
            trigger: 'blur'
          }],
          goods_weight: [{
            required: true,
            message: '请输入商品重量',
            trigger: 'blur'
          }],
          goods_number: [{
            required: true,
            message: '请输入商品数量',
            trigger: 'blur'
          }],
          goods_cat: [{
            required: true,
            message: '请选择商品分类',
            trigger: 'blur'
          }]
        },
        // 商品分类列表
        catelist: [],
        // 级联配置
        cateProps: {
          label: 'cat_name',
          value: 'cat_id',
          children: 'children'
        },
        // 动态参数列表
        manyTableData: [],
        // 静态属性列表
        onlyTableData: [],
        uploadURL: 'http://127.0.0.1:8888/api/private/v1/upload',
        // 图片上传组件的请求头对象
        headerObj: {
          Authorization: window.sessionStorage.getItem('token')
        },
        previewPath: '',
        previewVisible: false,
        // 需要修改的editId
        edit_id: ''
      }
    },
    methods: {
      // 获取所有商品分类数据
      async getCateList() {
        const {
          data: res
        } = await this.$http.get('categories')
        if (res.meta.status !== 200) {
          return this.$message.error('获取商品列表数据失败')
        }
        this.catelist = res.data
        console.log(this.catelist)
      },
      // 级联选择器 选择监听
      handleChange() {
        // console.log(this.addForm.goods_cat)
        if (this.addForm.goods_cat.length !== 3) {
          this.addForm.goods_cat = []
          return this.$message.warning('注意：只能选中第三级标签哦')
        }
      },
      beforeTabLeave(activeName, oldActiveName) {
        // console.log(activeName, oldActiveName)
        if (this.activeIndex === '0' && this.addForm.goods_cat.length !== 3) {
          this.$message.error('请先选择商品分类')
          return false
        }
      },
      async tabClicked() {
        // console.log(this.activeIndex)
        // 访问的是动态参数面板
        if (this.activeIndex === '1') {
          const {
            data: res
          } = await this.$http.get(`categories/${this.cateId}/attributes`, {
            params: {
              sel: 'many'
            }
          })
          if (res.meta.status !== 200) {
            return this.$message.error('获取动态商品参数失败')
          }
          console.log(res.data)
          res.data.forEach(item => {
            item.attr_vals = item.attr_vals.length === 0 ? [] : item.attr_vals.split(' ')
          })
          console.log(res.data)
          this.manyTableData = res.data
        } else if (this.activeIndex === '2') {
          // 访问的是静态属性面板
          const {
            data: res
          } = await this.$http.get(`categories/${this.cateId}/attributes`, {
            params: {
              sel: 'only'
            }
          })
          if (res.meta.status !== 200) {
            return this.$message.error('获取静态属性失败')
          }
          // console.log(res.data)
          this.onlyTableData = res.data
        }
      },
      // 处理图片预览效果
      handlePreview(file) {
        console.log(file)
        this.previewPath = file.response.data.url
        this.previewVisible = true
      },
      // 处理移除图片的操作
      handleRemove(file) {
        console.log(file)
        const filePath = file.response.data.tmp_path
        const i = this.addForm.pics.findIndex((item) => {
          return item.pic === filePath
        })
        this.addForm.pics.splice(i, 1)
        // console.log(this.addForm.pics)
      },
      // 监听图片上传成功的节点
      handleSuccess(res) {
        const picInfo = res.data.tmp_path
        this.addForm.pics.push(picInfo)
        // console.log(this.addForm.pics)
      },
      // 添加商品
      async add() {
        this.$refs.addFormRef.validate(isRight => {
          if (!isRight) {
            return this.$message.error('请填写必要的表单项')
          }
        })
        // 由于原来的addForm里面有些数据需要是数组不能变 而提交的数据要为string 要变所以可以进行深拷贝不改变原有的addForm
        // console.log(this.addForm)
        const form = _.cloneDeep(this.addForm)
        form.goods_cat = form.goods_cat.join(',')

        // 处理动态参数
        console.log(this.manyTableData)
        this.manyTableData.forEach(item => {
          const newInfo = {
            attr_id: item.attr_id,
            attr_value: item.attr_vals.join(' ')
          }
          this.addForm.attrs.push(newInfo)
        })

        // 处理静态属性
        console.log(this.onlyTableData)
        this.onlyTableData.forEach(item => {
          const newInfo = {
            attr_id: item.attr_id,
            attr_value: item.attr_vals
          }
          this.addForm.attrs.push(newInfo)
        })

        form.attrs = this.addForm.attrs
        // console.log(form.attrs === this.addForm.attrs)
        console.log(form)
        if (!this.$props.editId) {
          // 发起请求添加商品 名称必须唯一的
          const {
            data: res
          } = await this.$http.post('goods', form)
          console.log(res)
          if (res.meta.status !== 201) {
            return this.$message.error('添加商品失败')
          }
          this.$message.success('添加商品成功')
          this.$router.push('/goods')
        } else {
          // 商品修改功能未开发
        }
      },
      // 根据id获取要修改的数据
      async getEditGoodInfo() {
        const {
          data: res
        } = await this.$http.get('goods/' + this.edit_id)
        console.log(res)
        if (res.meta.status !== 200) {
          this.$router.push('/goods')
          return this.$message.error('获取商品信息失败')
        }
        // console.log(res.data)
        for (const item in this.addForm) {
          for (const i in res.data) {
            if (item === i) {
              this.addForm[item] = res.data[i]
              break
            }
          }
          if (item === 'goods_cat') {
            this.addForm[item] = this.addForm[item].split(',')
            this.addForm[item].forEach((tmp, index) => {
              this.addForm[item][index] = parseInt(tmp)
            })
          }
        }
        // console.log(this.addForm)
        // console.log(this.manyTableData)
        // console.log(this.onlyTableData)
      }
    },
    computed: {
      cateId() {
        if (this.addForm.goods_cat.length === 3) {
          return this.addForm.goods_cat[2]
        }
        return null
      }
    },
    created() {
      this.getCateList()
      // console.log(this.props.editId)
      if (this.$props.editId) {
        console.log(this.$props.editId)
        this.edit_id = this.$props.editId
        this.getEditGoodInfo()
      }
    }
  }

</script>
<style lang="less" scoped>
  .el-checkbox {
    margin: 0 10px 0 0 !important;
  }

  .previewImg {
    width: 100%;
  }

  .btnAdd {
    margin-top: 15px;
  }

</style>
